Kathal Paduthum Padu () is a 1966 Indian Tamil-language romance film directed by Joseph Thaliath Jr and produced under Citadel Studios. The film stars Jaishankar and Vanisri, the latter's debut in Tamil cinema. It was released on 7 October 1966 and became a commercial success. The film was remade in Telugu as Premalo Pramadam (1967).
Kathal Paduthum Padu was directed by Joseph Thaliath Jr and produced by Dominic Joseph under the banner of Citadel Studios. The story and dialogues were written by Kalaignanam. This film marked Vanisri's first lead role in Tamil. Gemini Rajeshwari (credited simply as Rajeshwari) was cast after Thaliath was impressed with her performance in the play Kannum Imaiyum. Cinematography was handled by B. B. Lucas, and editing by M. Vellaichami. It is Vellaichami's first film as editor.
The music was composed by T. R. Pappa.
Kathal Paduthum Padu was released on 7 October 1966, and became a commercial success.